Machine for drying paper-board, sized paper, &amp;c.



H. P. 00E.

MACHINE FOB. DRYING PAPER BOARD, SIZED PAPER, Kw.

APPLIOATION FILED MAB..14, 1914.

1,125,659, Patented Jan. 19, 1915.

3 SHEETS-SHEET 1.

WITNESSES INVENTOI? H. P. COB. mourns FOR DRYING PAPER BOARD, SIZED PAPER, 6w.

APPLICATION IILED MAR. 14, 1914.

Patented Jan. 19, 1915.

3 SHEETS-SHEET 2.

WITNESSES:

H. P. 00E. MACHINE FOR DRYING PAPER BOARD, SIZED PAPER, 6w.

APPLICATION FILED MAR.14, 1914.

Patented Jan. 19, 1915.

3 SHEETS-SHEET 8.

HWE/VTUR vmflum A RIVEVS HARRY P. ODE, OF NEW YORK, N. Y.

MACHINE FOR DRYING PAPER-BOARD, SIZED PAPER, &e.

Specification of Letters Patent.

Patented Jan. 19, 1915.

Application filed March 14, 1914. Serial No. 824,616.

' a specification, reference being had to the accompanying drawings, hereof.

This invention relates to machines for drying paper board, sized paper, etc'., in a continuous web, while moving.

In accordance with the present practice paper is generally dried in one of two ways, depending largely upon its character. In the more common method machines are emforming a part 'ployed which comprise a series of large hot drums operating in an open room. These machines are very cumbersome and expensive and their range of usefulness very limited in that only certain kinds of paper may be dried successfully thereby The other method widely used and which also is applicable only to certain kinds of paper, consists in hanging the paper in gridlike Webs over poles in a loft which is maintained at a predetermined temperature for a long period of time. @bviously, this last named method is very expensive and unsatisfactory in that practically no control is had over the drying process and the time involved makes the methbd undesirable for present day commercial practice.

In accordance with thepresent invention, the expense and general difliculties pointed out in connection with the two methods referred to above, are eliminated,-and a machine is provided which is of comparatively simple and inexpensive construction and permits paper of different kinds to be passed through it ina continuous web and dried uniformly on both sides within a comparatively short period of time.

In addition to having for its general object the provision of a machine of this character this invention seeks further to embody in said machine a variable tension device including a drum over which the web of paper passe-sand by the adjustment of which the tension on the web may be changed according to the character of the'paper and the character of finished state accordingly controlled largely by the operator.

Another object of the invention is to divide the inclosing casing of the machine into a series of drying chambers in each of which may be disposed the carrying rolls and the tem erature of each of which may be control ed within certain limits so that the web of paper as it passes from one of these chambers to the next is subjected to changing degrees ofheat.

Another object is to provide in the machine in combination with the series of carrying rolls, suitable drums of relatively large diameter at the end of each series of carrying rolls, to change the direction of travel of the web'of paper without bending it unduly or distorting it permanently from its proper. form.

Another feature of the invention resides in the provision at the discharge end of the machine of suitable winding rolls on to which the paper may be passed after leaving the machine, these winding rolls being so disposed as to cooperate with the adjustable tension roll hereinbefore referred to, in a manner to insure the winding on of the web of paper under proper tension and in proper condition for immediate use wherever needed.

. It should be noted particularly that the improved machine is not equipped with the usual expensive drying drums but is provided merely with a series of supporting and cooperating presser rolls for the web, the drying heat being derived from currents of hot air introduced into the inclosing casing and directed in its discharge through the casing by suitable fines and valves.

' The invention will be described more particularly with reference to the accompany ing drawings, in which- Figure l is a fragmentary view of the improved machine, partly in side elevation and partly in section, showing somewhat conventionally the supporting rolls and indicating in a few instances the driving sprockets for said rolls. Fig. 2 is a view on a smaller scale and somewhat similar to Fig. 1. showing particularlythe chain drive for the carrier rolls and indicating generally the path of the web of paper through the machine, most of the presser. rolls being omitted in the interest of clearness. Fig. 3 is a view partlyin plan and partly in horizbntal section of the-machine as illustrated in Fig. 2'

and showing particularly the devices for";

one end a evel pinion m controlling the variable tension means. Fig. 4 is a view partly in vertical section taken transversely through the machine and partly in end elevation showing particularly the relationship of the carrying rolls and the dcts through which the heated air is introdiced into the drying chamber. Fig. 5 is a detail view in section taken on the planeindicated by the line 5-5 o'fFig. 4: and looking in the direction of the arrows.

The machine comprises generally an inclosing casing a having therein vertically disposed standards 7) arranged longitudinally of the machine and in parallelism and spaced respectively from the opposite side walls of the casing 05 so as to leave suitable air chambers 0 on each side of the machine. On the standards I) are mounted suitable carrying rolls (1 and presser rolls 6 cooperating therewith, these rolls extending transversely of the machine and being disposed in successive series from top to bottom of the machine so as to permit a continuous web of paper, indicated generally by the reference character f, to pass from one series to another from top to bottom of the machine, the direction of travel of said web being changed adjacent the end of each series of rolls by means of a suitable drum 9' of relatively large diameter. Each drum g has 00- operating with it, as have certain of the carryin rolls a, a series of presser-rolls e mounted around. so much of its periphery as the web contacts with. Each carrying roll may be provided on one end with a sprocket cZ' engaged by a driving chain it operated from a prime mover shaft h and the other end of each of said rolls may carry a sprocket d engaged by an endless chain 2'- passing over idlcrs 7t and engaging sprockets 6 fixed on the next lower series of presser rolls 6. By means of this method of driving it will be evident that absolute uniformity of speed of each series of feed rolls will be secured and accordingly the danger of the imposition of strains on the web of paper, as it passes from one series of rolls to another, is eliminated. It should be noted here that While the drums 7 for changing the direction of travel of the paper web have been described as being of relatively large diameter, the character of the paper being dried will serve to fix this diameter, it being only necessary that the paper should not be bent through such an angleas to cause permanent distortion or breakage. The lowermost drum 9, over which the web travels before passing from the casing a, is supported at each end in suitable frame members Z which are secured adjacent their lower edges to supporting sleeves Z threaded interiorly to receive respectively finely threaded screws m. T hese screws are rotatably mounted in fixed bearin s n and each screw carries on with which meshes a bevel pinion 0 secured to a transverse operating shaft 0 which is, in turn, operatively' connected, through cot perating bevel pinions 0 and 7) and rotatable shaft 2 (disposed without the casing a and "extending longitudinally thereof) and through other meshing bevel pinions p and g, to a short shaft 9. This short shaft is connected to a prime lnover shaft r through a straight belt 8 and a crossed belt 8 and is driven in one direction or the other by means of the prime mover shaft 1" according to the position of a suitable clutch r operatively disposed on the shaft 7". From this description, it will appear that the operator, by

proper manipulation of the clutch 1', may

bring about the rotation of the shaft 0 in one direction or the other and corresponding bodily movement of the drum 9 on its supporting sleeves Z to increase or decrease the tension on the Web of paper as it passes over said drum. In this manner the tension of the paper may be regulated throughout the greater portion of its length as it passes through the machine and also regulated after it leaves the drum g and before it passes on to the winding rolls now to be de scribed.

The winding rolls are disposed Without "the casing a at the lower portion thereof and preferably at the end remote from the wet mill and comprise generally a guide roll 25 and cooperating winding-on rolls" 2?, 16 one of which is driven from the prime mover shaft it as through a driving connecion 71, The rolls t, t, t are so disposed with respect to each other and to the discharge point of the web f that no abrupt change of direction is given to the web and the web is wound on to the roll in such a way as to insure uniformity both in its form and in the character of its surfaces.

The general mechanical features of the machine and their mode of operation having now been described, the devices for effecting the drying and the relationship thereof to the means for moving the web through the machine, will be pointed out. The heating air is derived from a main supply conduit 20 which has communicating therewith two branches 1/ and 1/? extending longitudinally of the machine and disposed directly over the two air chambers c, c, hereinbefore referred to. Each of the branches u, if, is provided with downwardly extending ducts 11. which pass through the upper wall of the casing a and terminate adjacent the lower portions of said air chambers a. In the ducts a are formed several openings a ap proximately at the same level as the successive series of carrying rolls d and cooperating presser rolls 6. Each of the openings o which is preferably segmental in form, may be controlled by a rotatable sleeve valve 1) in which is a slit 2) to'permit the discharge of heatedair. By adjusting the position of the slit 1) with respect to the segmental opening w it is evident that the angular relation of the stream of air with respect to the longitudinal axis of the machine, may be varied. The several air jets thus discharged pass over the moving web 7 and after absorbing moisture therefrom escape from the casing a, through a stack a.

To facilitate the adjustment of the rotatable sleeves a about the openings 14* which are controlled thereby, the side walls of the casing a carry removable panels a which may be held in place by suitable wing nuts e In connection with these removable panels a it might be pointed out that they will be found convenient to permit access to the interior of the casing a in case the web of paper f breaks. The present machine has been designed with a view to eliminating as far as possible the danger of such breakage but, as will be understood by those skilled in the art, some paper webs are of such an eX- tremely delicate character as to make their handling very uncertain. The improved machine represents a marked improvement,

however, with respect to the liability ofbreakage of the web, over known machines, in that such known machines have usually required that the gridlike web travel vertically and be suspended solely by its own weight from elevated carrying rolls. The disposition of the carrying rolls in horizontal series and in juxtaposition each to each insures an adequate and practically continuous supporting surface for the web of paper. It has been found in practice that after the web is once passed from the wet mill through the machine, the operation of the machine may be continued without interruption, the

winding-on roll being removed from time to time and new rolls being substituted. in the wet mill, the webs of such new rolls being united with the webs of the next preceding roll and so carried thereby through the machine.

When the operation of the machine is to be discontinued temporarily a strip of muslin or other suitable material may be united with the end of that web of paper which is being passed through the machine and said strip of muslin may be carried by the web of paper through the machine, the operation of the machine being discontinued as soon as the front edge of the muslin appears at the discharge end of the machine. Of course, the strip of muslin must be of such length that the rear end thereof is exposed at the feed end of the machine when the front edge thereof is exposed at the discharge end of the machine. v

Upon the next succeeding operation of the drier the web ofpaper to be dried is united with the rear end of the said strip of muslin series of feed rolls;

provided with and carried thereby through the machine after which the continuous web is moved in the manner hereinbefore described.

The system of heating above described will be sufficient under some circumstances although it will be found desirable usually to provide within the casing a. a series of chambers corresponding respectively to the In this manner, the temperature of each of these chambers may be regulated within certain limits and independently of the temperature of the remaining chambers and the web f may.thus be passed successively through chambers of varying temperatures and its rate of drying at different stages controlled. To accomplish this control, the present machine is provided with horizontal partitions 10 extending longitudinally a ndtransversely of the casing a and disposed between each set of carrying rolls d and the next lower set of presser rolls 6. In this way a series of chambers is formed and each set of carrying and presser rolls is disposed within one of these separate chambers. In practice, the uppermost chamber will receive air at a rela tively low temperature, say 125 F., and the next lower chamber will receive air at a higher temperature and so on throughout the successive series of chambers, the lowermost chamber being heated at a temperature, say of 250 F. These varying temperatures for each chamber may be readily secured,

peratures desired.

lnaddition to the heated air employed, additional heat for drying purposes may be derived from steam headers m which extend transversely through the casing 64 and are longitudinally extending steam pipes as. Each of these headers may be valve-controlled to assist in regulating the temperatures in the various chambers. it will be evident that the temperatures of each successive series of steam pipes 02' may be regulated by suitable valves (not illustrated) and the temperatures of the adjacent chamber thereby fixed within certain limits. It will also be-evident that the steam heaters a with their series of longitudinally extending pipes so" may serve as supports for the webs w.

.11; is beiieved that the operation of the tally disposed series of carrying devices disposed within the casing at different levels to support and move the web continuously, drums of relatively large diameter mounted adjacent the end of each horizontal row of devices and disposed to receive the web and change its direction of travel to the next horizontal row of devices, and means to cre-' ate heated currents of a r wlthin the casing to contact with the Web and dry the paper.

2. In a machine for drying paper board, sized paper, etc., in a continuous Web, the combination of an inclosing casing, horizontally disposed series of carrying devices disposed within the casing at difierent levels to support and ,move the web continuously, a drum of relatively large diameter mounted at the end of each horizontal row of devices and disposed to receive the web and change its direction of travel to the next horizontal row of devices, ine'ans to adjust said drum with respect to the carrying devices to change the tension of the web, and means to create heated currents of air within the easing to contact with the web and dry the paper.

3. In a machine for drying paper board, sized paper, etc., in a 'continuous web, the

combination of an inclosing casing, horizontally disposed series of carrying devices disposed within the casing at different levels to support and. move the web continuously, a drum of relatively large diameter mounted at the end of each horizontal rowof devices and disposed to receive the web and change its direction of travel to the next horizontal row of devices, means to adjust said drum with respect to the carrying devices to change the tension of the web, said means including end bearings for the drum, rotatable screw shafts on which the bearings are adj ustably supported and means under the control of the operator for rotating said screw shafts in either direction to move the bearings of the drums, and means to create heated currents of air within the casing to contact with the web and dry the paper.

. 4. In a machine for drying paper board,

posed within the casing at different levels to support and move the web continuously, a drum of relatively large diameter mounted at the end of each horizontal row of devices and disposed to receive the web and change its direction of travel to the next horizontal r0 of devices, means to adjust said drum with respect to the carrying devices to change the tension-of the web, said'means including end bearings for the drum, rotatable screw shafts on to which the bearings are threaded, a single shaft extending transversely between the bearings, cooperating bevel 'pinions carried on said transverse shaft and on each of the screw shafts, said .transverseshaft projecting at one end with out the casing, another shaft extending, longitudinally of the casing and with which the transverse shaft is geared, power means to rotate said last named shaft and a clutch interposed between the power means and the last named shaft whereby the direction of rotation of the latter and the duration thereof may be controlled, and means to create heated currents of air Within the casing to contact with the web and dry the paper.

5. In a machine for drying paper board, sized paper, etc, in a continuous web, the combination of an inclosing casing, horizontally disposed series of carrying devices disposed within the casingat different-levels to support and move the web continuously, drums to change the direction of travel of the web from one horizontal set of rows to another, longitudinally extending partitions disposed between successive sets of devices to divide the casing into a series of chambers and fneans to heat each of said chambers to approximately any desired temperature.

6. In a machine for drying paper board, sized paper, etc., in a continuous web, the combination of an inclosing casing, horizontally disposed series of carrying devices disposed within the casing at different levels to support and move the web continuously, means to create heated currents of air with in the casing to contact with the web and dry the paper, drums to change the direction of travel of the Web \vithin'the casing from one horizontal set of devices to another to subject the web to uniform heating on both surfaces, a guide roll disposed without the casing at the discharge end thereof to receive the web in its travel and wind-on rolls mounted near the guide roll to receive the web therefrom.

7. In a machine for drying paper board, sized paper, etc., in a continuous web, the combination of an inclosing casing, horizontally disposed series of carrying devices disat the end of each horizontal row of devices and disposed to receive the web and change This specification signed and witnessed its direction of travel to the next horizontal this ninth day of March, A. D. 1914.

row of derices, wind-on r01ls disposed With- H ABBY P. COR

out the casing at the discharge end thereof 5 to receive the web in its travel and means to Signed in the presence of adj 11st the drum with respect to the carrying E. M. TAYLOR,

devices to change the tension on the web. VORTHINGTON CAMPBELL. 

